利用微胶囊包埋技术制备速溶紫薯粉,并确定了工艺条件。通过喷雾干燥制取速溶紫薯粉,采用单因素对比试验以及正交试验最终确定喷雾干燥的适宜工艺条件:包埋剂β-环状糊精添加量为总质量的0.25%;喷雾干燥工艺条件为:风速1 m3/min、进料量4 L/h、进口温度为130℃。

Microencapsulation technology was used in the preparation of instant powder of Purple Sweetpotato.The process conditions were optimized.Spray drying was chosen in the preparation of instant powder of Purple Sweetpotato.By single factor and orthogonal experiment,the best condition for spray drying was: embedding agent the amount of β-cyclodextrin is 0.25% of the total weight,spray drying wind speed in 1 m~3/min,4 L/h,inlet temperature 130 ℃.